A new triply rotated quartz cut for the fabrication of low loss SAW filters

Analysis of the Quartz properties shows the existence of unexplored angular domains for which Rayleigh waves can be efficiently excited, exhibiting physical characteristics better than the ones of the (ST,X) cut. This paper presents a family of quartz cuts allowing significant improvements of SAW devices on Quartz. Experiments have been performed, confirming the above mentioned theoretical predictions. A filter built on this cut is presented showing the interest of the proposed crystal orientations.